Read Panasonic KX-TDA0103X / KX-TDA0103XJ / KX-TDA0104X / KX-TDA0104XJ / ETX1KM753MB / ETX1KM752MB Service Manual online
12
KX-TDA0103X/KX-TDA0103XJ/KX-TDA0104X/KX-TDA0104XJ
4.3.6.
30V Output Circuit
30V Output circuit converts the 41V or the Battery back up voltage (during back up mode) to a regulated 30V output by DC-DC
switching PWM
1. Q502 : DC-DC switching MOSFET
D503: Flywheel diode
L502 : DC-DC choke
C506 : DC output smoothing capacitor
Peripheral circuit provide ripple reduction and voltage sensing and feedback
L502 : DC-DC choke
C506 : DC output smoothing capacitor
Peripheral circuit provide ripple reduction and voltage sensing and feedback
2. DC-DC switching IC and control circuit
IC551 provides the control IC for switching and voltage control
4.3.7.
41V Output Circuit
41V Output circuit converts the 41V convertor output or the Battery back up voltage (during back up mode) to a ON/OFF
switched 41V output voltage
1. Q106 : DC output switch MOSFET
Peripheral circuit provide ripple reduction and OCP
2. Short circuit Protection control circuit
Allow the 41V output to switch into Hiccup mode during short circuit
R101 : Output current sensing resistor
IC101 : Over current sensing comparator IC
Q104-Q108 : peripheral circuit to activate the On/Off of Q106 during output short circuit
R101 : Output current sensing resistor
IC101 : Over current sensing comparator IC
Q104-Q108 : peripheral circuit to activate the On/Off of Q106 during output short circuit
Click on the first or last page to see other KX-TDA0103X / KX-TDA0103XJ / KX-TDA0104X / KX-TDA0104XJ / ETX1KM753MB / ETX1KM752MB service manuals if exist.